Heel-trimming machine.



E. E. WINKLEY. I HEEL TRIMMING MACHINE.

APPLICATION FILED MAR.7.19I2- RENEWED MAR. 23. I917.

Patented Dec, 4, 1917.

4 SHEETS-SHEET 1 155 15a 14? 145 QM] E. E. WINKLEY.

HEEL TRIMMING MACHINE.

APPLICATION FILED MAR. 7. 1912. RENEWED MAR. 23. 1917.

Patented Dec. 4, 19171".

4 SHEETS-SHEET -2v- E. E. WINKLEY.

HEEL TRIMMING MACHINE. APPLICATION FILED MAR. 7. 1912. RENEWED MAR. 23. 1917.

1 F111 Patented Dec. 4,1917.

4 SHEETSSHEET3- z yrci E. E. WINKLEY.

HEEL TRIMMING MACHINE.

APPLICATION FILED MAR 7, 1912. RENEWED MAR. 23. 1917.

Patented Den. 4, 1917.

4 SHEETS-SHEET 4.

, J1 J4 Z3 i I J74 L J n'nastrns' swimmer, or LYNN, mas'saonosnrrs, assi'enon to career) snot maonrnniar ooivr ranr, or rarer-son,

new Jar-tear, A watchman 0e HEEL-TRIMMING Madman.

Specification of Letters Patent.

Application filed March 7, 1912; Serial No, 682,209. Renewed March 23, 1917. Serial No. 156,967.

To all whom it may concern: I

Be it known that I, ERASTUS E. WINKLEY, a citizen of the United States, residing at Lynn, in the countyof Essex and State of Massachusetts, have invented certain new and useful Implements in Heel lrinnning Machines; and I do: hereby declare the following to be a full, clear, and exact description of the invention, such will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to machines which are used in the manufacture of shoes, having particular reference to improved mechanism for trimming heels.

The object of the present invention is to provide an automatic heel trimming machine by which heels may be trimmed without any manipulation of the work by the operative except the placing of the work upon a support and its removal therefrom after the heel trimming operation has been completed.

With this object in view a feature of the present invention contemplates the provision, in a heel trimming machine provided with a suitable trimming tool, a work support, and means for actuating the tool and the support to transfer the line of operation of the tool around the heel, of means for tipping the heel about an axis intersecting the line of operation of the tool tangential to its trimming surface.

In its broader aspects the invention contemplates constraining the heel to tip about an axis tangential to the operative surface of any form of tool, with or without means for relatively actuating the tool and the work to transfer the line of operation of the tool around the heel.

Broadly considered, the controlling means for constraining the work to tip about an axis tangential to the operativev surface of the tool may take any desirable or expedient form. In the preferred form. of the invention, which is the best form at present devised, the tipping of the work is controlled by the contour of the upper and lower sur-v faces of the heel.

Any point on the peripheral-surface of the heel formed by the line of cutmay be selected'to intersect the tipping axis of the shoe, but it is preferred to tip the shoe about an axis located between the upper edge of the heel and toplift.

In embodying the invention in the best form at present devised, the line of opera tion' of the tool is transferred along the surface of the heel to be trimmed by rotating the heel in contact with the tool to transfer the line of operation along the curved portions of the heel, and by sliding the heel in contact with the tool to transfer the line of operation along the substantially straight portions of the heel. During the transfer of the line of operation of the tool along the heel a change is produced in the relative inclination of the tool and the heel by tipping the heel about an axis, located on the peripheral surface of the heel formed by the line of out, passing tangential to the operative surface of the tool.

Another feature of the invention contemplates the provision in a heel trimming machine provided with asuitable tool, of a work support, means for determining the working position of the shoe upon the support, and means for automatically withdrawing the positioning means from the path of the trimming tool. Preferably the work support is provided with a pattern? shaped similarly to the shape of the toplift and a series of pins are actuated to inclose the heel and determine its workingposition with relation to the pattern. In the illustrated embodiment of the invention the heel is positioned so that it overlaps the pat-' tern in order to permit the entire height, which includes the toplift, to be engaged by the cutter. Ehis construction is advanta geous in that the accurate trimming of the Patented nee. a, ran.

heel to the size of the toplift is made pos-, H

be readily understood from an inspection of I the accompanying drawings, in which,

Figurel is a plan view of a heel trimming machine embodying the features of the invention in the best form at present devised;

Fig. 2 is. a right side elevation; Fig. 3 is a front elevation; and Fig. 4E is a detail partly in section of the work support, its associated devices, and the rotary cutter and its associated devices during the trimming operation. 7

In the embodiment of the invention illustrated in the drawings the features of the invention are disclosed in a machine for trimming heels after their attachment to a I shoe, but it is particularly pointed out that as to certain features hereinafter descrlbed the'scope of the invention is not circumscribed by the illustrated embodiment, be

cause,*as those skilled in the art will readily recognize, such features are applicable to machines for trimming heels before their attachment to a shoe.

- Described in general terms the heel trimming machine illustrated in the drawings is provided with a work support which, when the machine is at rest, is held away from the tool to permit the easy insertion and removal ofthe work. The work is nositioned on the work support by a gage or positioning means and locked in this position by a clamp which holds the work during the trimming operation. -After the work has been clamped on the support, the positioning means is automatically' withdrawn and the work is swung against the cutter and is guided during the trimming operation by two guides, one of which engages the upper surface of the heel,

5 and is adapted to enter the rand crease when the heel is attached to a shoe as illustrated, and the other of which engages a form cor-responding in contour to the toplift of the heel. The guides are arranged to permit the cutter to operate along the entire.

height of the heel. The work support is mounted so that as the work presses against the guides during the transfer of the line of operation of the tool along the heel it may tip about an axis intersecting the line of operation of the cutter tangential to its trimming surface, After the completion of the trimming operation the work is swung away from the cutter, the clamp unlocked and elevated, the work support straightened for a new operation, and the machine automatically stopped.

'Referring now to the embodiment of the invention illustrated in the drawings, the present invention is shown embodied in a heel trimming machine provided with a trimming cutter 1- of usual construction secured to a shaft 2 which is rotated from some suitable source of power through a pulley 3.

i A shoe having attached thereto a heel to be operated upon is placed upon a plate 4 removably secured to a post 5 to permit the use of different sizes of plates for different sizes of shoes. The post 5 is carried by a bracket 6 projecting from a frame 7. The plate 4 is provided at its forward end with a pair of lugs 8 which engage the opposite sides of the fore part of the sole of the shoe. At its rear end the plate a is provided with a pattern 9 having the peripheral form of the toplift of the heel.

In order to determine the working position of the toplift of the heel on the pattern 9, the post 5 carries a loosely mounted plate 10 provided with a series of positioning pins 11, one of which is arranged to pass through an opening in the plate l to engage the breast of the heel and the other ones of which are arranged to surround the plate at to engage the peripheralsurface of the heel. The plate 10 is prevented from rotating upon the post 5 by a pin 12 projecting from a sleeve 13 on the post 5 and passing through an opening in the plate 10. The plate 10 is rci'novably secured to the end of arod 14; to permit the use of a (litter-e111; arrangement of positioning pins for the different sizes of plates 4. The rod ll is slidably mounted in the bracket 6 and frame 7 and is reciprocated to project the pins above the surface of the pattern plate 5) to act as a gage for positioning the toplift of the heel by a lever 15 centrally pivoted upon the frame 7, one end of which lever is arranged to engage the free end of the rod ll and the other end of which is engaged by an arm 16 projecting from a sleeve 17 on a rod 18 carried by a bracket 19 on the machine frame. A second arm 20 projecting from the sleeve carries a roll 21 engagml by a groove formed in the periphery of a cam 22 on a cam shaft 23. As-soon as the toplift is properly positioned upon the plate 4 by the pins 11 the heel is automatically clamped by a mechanism which will be presently described and the pins 11 are returned to their normal position when the cam 22 releases the rod 14 to the influence of a spring 24 coiled around the rod and interposed between the bracket 6 and a collar 25 on the rod. The collar 25 fits into a groove formed in the sleeve 13 so that the pin 12 is advanced and retracted simultaneously with the plate 10.

The heel is clamped to the plate l by a clamping foot 26 which enters and engages the heel seat of the shoe. The foot 26 is formed upon the end of a rod 27 rotatahly and slidably mounted in a barrel 28 formed on the frame 7. The foot 26 is normally held advanced toward the heel seat of the shoe by a spring 29 coiled around the rod 27 and interposed between an interior wall of the barrel 28 and a collar 30 secured to the rod 27. The rod 27 is rotatably mounted in a yoke 31, the arms 32 of which are slidably mounted in the frame 7. The rod 27 is held from axial movement in the frame 31 by collars 33 and 34 secured to the rod and arranged to engage respectively the opposite sides of the yoke 31. Tnterposed between the collar 34: andyoke 31 are a series of balls 34, providing a ball bearing for the rod 27 and a device for absorbing the axial clamping thrust of the rod. The yoke 31 is reciprocated in the frame 7 to cause the foot 261:0 clamp the heel to the plate 41 through connections from a cam. This cam is designed to move the foot to clamp a shoe to the plate 4 with sufficient pressure to prevent displacement of the heel upon the plate during the trimming operation. As different sizes of heels vary in thickness between their heel seats and toplifts, it is clear that the clamping pressure sufficient to clamp one size of heel would be either insufficient or excessive for another size. In order that the clamping pressure may be uniform for all sizes of heels, the machine of the drawing is provided with a device which preliminarily measures the thickness to be clamped and automatically adjusts the connection between the cam and the clamping foot in accordance with its thickness determinations so that the final clamping pressure may be uniform for all sizes of heels. This automatically adjustable connection between the cam and the foot 26 is a lever 35 provided with an inclined foot 36 centrally pivoted on the vertical arm of a bell crank lever 37 carried by a bracket 38 on the frame of the machine. The lever 35 is jointed to a rod 39 which is .jointed in turn to an arm T0 projecting from a sleeve 4-1 on a rod 42 carried by the machine frame. A second arm 43 projecting from the sleeve 41 carries a roll at engaged by a groove formed in the face of a cam d5 on the cam shaft 23. Through the connections described the lever 35 is maintained normally in the position of Fig. 3. As soon as the shoe is positioned upon the plate ,4: the cam 45 releases the lever 35 to the influence'of a spring 46 connecting the lever 35 with a pin 47 on the bracket 38. YVhen the lever 35 is released to the influence of the spring 46 the inclined foot 36 is drawn down upon the end of the rod 27, thus caus ing the clamp to seat itself upon the heel seat inside the shoe. By this construction the lever 35 automatically adjusts the connection between the cam 4:5 and the foot 26 in accordance with the different thicknesses of heel to be clamped.

As soon as the connection has been adjusted the bell crank lever 37 is rocked to cause the foot 26 to clamp the heel. To this end the horizontal arm of the bell crank lever 37 is jointed to a' rod 48 which is jointed in turn to an arm 49 projecting from a sleeve 50 on a rod 51. A second arm project ing from the sleeve 50 carries a roll 52 engaged by a groove formed in the face of a cam 53 on the cam shaft 23. Through the connections described the foot 26 is actuated to clamp the heel when the toplift is properly positioned upon the plate 4-. As shown in Fig. 1, the post 5 is supported, under the axial thrust of the final clamping pressure, by a lug 53 formed upon an arm supported from movement under the clamping pressure by the frame of the machine.

Tn order to lock the foot 26 in its clamping position, the arms 32 carry pivoted dogs 54 arranged to engage the teeth 55 formed on the exterior of the barrel 23. The dogs 54 are connected to each other by links 56 so that they are simultaneously actuated toward locking position by a leaf spring 57, the free end of which presses on one of the dogs 5%.

The work support may now be pressed toward the tool 1 to trim the heel of the shoe. To this end the frame 7 carrying the shoe is pivoted upon a vertical post 58. i i hile the shoe is being positioned on the plate lthe frame 7 is swung away from the tool 1 by a platform which engages a ball 60 on the end of an arm 61 projecting from the frame 7. The platform is carried on the end of a rod 62 which is supported by an arm 63 projecting from a sleeve mounted on a rod 64: carried by a bracket on the machine frame. A second arm 65 projecting from the sleeve carries a roll 66 which is engaged by a groove formed in the face of a cam 67 on the cam shaft Through the connections described the platform is elevated to swing the frame 7 away from the tool 1. When the cam 67 releases the platform to the influence of gravity, the frame 7 is swung toward the tool by a spring 68 coiled. around a rod 69 passing loosely through the arm 61 and jointed to an arm 70 projecting from the post The spring 68 is interposed between a collar 71 loosely supported by the arm 61 and an adjustable collar 72 carried by the rod 69.

As the shoe swings toward the tool 1. under the influence of the spring 68 it strikes against a guide 73 which finds the rand crease, engages therein and then moves rearwardly with the shoe. The guide 73 is formed on a finger 7 lpivoted on an arm 7 5 projecting from a long sleeve 76 mounted on a vertical rod 77 carried by the machine frame. The guide 73 is normally held advanced toward the approaching shoe by a spring 78 the ends of which are secured to the finger 74: and arm respectively. In order that the guide 73 may find and engage the rand creases of shoes of different sizes, the guide 73 is normally maintained elevated and is released when the shoe strikes against it so that the guide may slide down the shoe and find th rand crease. To this end the lower end of the sleeve 76 is connected through a right and left adjustable link 79 to one end of an arm 80 pivoted at its other end on a bracket on the machine. Intermediate its ends the arm 80 is provided with a roll 81 which when the frame 7 is swung away from the tool 1, is engaged by'a shoulder cam 82 (Fig. 1) formed on the cam 45 which, through the connections described, holds the guide 73 elevated against the. tension of a spring 83 connect ing the arm 80 and the machine frame. The shoulder 82 on the cam is so located that when the guide 73 strikes the shoe the guide is released to the influence of the spring 83 which slides the guide down the counter of the shoe until the crease is found and engaged.

The shoe and the guide 7 3 are moved rearwardly by the spring 68 until a lug 84 on the finger 74 strikes a lug 85 formed on one of the supporting brackets for the trimming cutter. The'shoe is then roc ed to bring the heel thereon in the proper operative relation to the tool. To this end the post 58 which supports the frame 7 is rotatably mounted in a vertical sleeve 86 formed on a bracket 87 on the machine frame. iVhen the finger 74 strikes against the lug 85 the spring 68 rocks the post 58 in the sleeve 86 until the pattern 9 contacts against an annular guide 88 carried by the cutter 1. The heel is now properly positioned for the trimming operation.

The line of operation of the tool is transferred from the back of the heel around to one breast corner then back around the peripheral surface of the heel to the other breast corner and then back to the starting point at the back of the heel. In the machine of the drawings the line of operation of the tool is transferred by a series of rotating and sliding movements of the work support. While held pressed against the tool the rotating movement of the work support transfers the point of operation of the tool along the curved portions of the heel, and the sliding movement along the substantially straight portions of the heel. In order to rotate the work in the frame 7 the plate 4 is provided with a projecting channel bar 88 which loosely receives a ball 89 on the end of an arm 90 projecting from a hub 91 journaled on a pin 92 carried by the machine frame. The hub 91 carries a pinion 93 which meshes with a segment 94 formed on an arm 95 projecting from a hub 96 mounted on a pin 97 on the machine frame and slotted to embrace the cutter shaft. A second arm 98 projecting from the hub, is pivoted to a vertical rod 99, the lower end of which is pivoted to an arm 100 projecting from a sleeve 101 on the rod 42. A second arm 102 projecting from the sleeve 101 carries a roll 103 engaged by a groove formed in one face of the cam 22. Through the connections described the pinion 94 is rocked to rotate the work support to transfer the line of operation of the tool along the curved portions of the heel.

Upon referring to Fig. 2 it will be noticed that when the substantially straight side portions of the heel are being operated upon the toe of the shoe will he pointed in a vertical direction so in order totransfer the line of operation of the tool along the substantially straight side portions of the heel the work support is elevated or lowered when the toe of the shoe points in a vertical direction. To this end the post 58 is slidably mounted in the sleeve 86 and is engaged by the arms of a yoke 104 formed on the end of an arm 105 projecting from a sleeve 106 on the rod 51. A second arm 10'? projecting from the sleeve 106 carries a roll 108 which is engaged by a groove formed in one face of the cam 22. Through the connections described the post 58 is raised and lowered to transfer the line of operation of the tool along the substantially straight side portions of the heel.

During the trimming operation the spring 68 maintains the rand crease and pattern 9 pressed firmly against the guides 73 and 88 respectively. As shown in Fig. 4, the shoe is so positioned on the plate 4 that the trimming cutter may operate upon the entire heignt of the heel. As shown also in this figure, the axis about which the work tips to maintain it pressed against the guides 73 and 88 is tangential to the operative surface of the trimming cutter. Furthermore, this axis is located between the edge of the heel seat and the toplift on the peripheral surface of the heel formed by the line of cut.

After the heel is trimmed the platform 59 is elevated to swing the work support away from the tool into its original position. When the shoe is thus swung back the clamping foot 26 is first unlocked and the frame 31 is then retracted to permit the free removal of the work from the plate 4. In order to unlock the clamping foot 26, one of the dogs 54 is provided with a tail 109 which is struck by a lever 110 secured to a rock shaft 111 journaled in the frame 7. A second lever secured to the rock shaft 111 isjointed to a vertical rod 112, the lower end of which is jointed to an arm projecting from a sleeve 113 on the rod 42. A second arm 114 projecting from the sleeve 113 carries a roll 115 which engages a groove formed in the face of the cam 67. By the connections described from the cam 67 to the lever 110 the dogs 54 are simultaneously withdrawn from engagement with the teeth 55.

When the clamping foot 26 is unlocked it is withdrawn a sufficient distance to permit the free removal of the work by a hook 116 which engages a lug 117 projecting from the yoke 31. The hook 116 is formed on the end of an arm 118 carried by a rock shaft 11.9 journaled in a bracket 120 carried by the machine frame. A second arm 121 secured to the rock shaft 119 is jointed to a vertical rod .122, the lower end of which is jointed to an arm 123, projecting from a sleeve 124 on the rod 42. A second arm 1'25 projecting from the sleeve carries a roll 126 which is engaged by a groove formed in the face of the cam 53.

To hold the frame 7 in proper alinement with the front of the machine sot-hat the pattern 9 will be in a position of presentment, that is, readily accessible for positioning and removing of shoes, the machine of the'drawings is provided with a device for swinging theframe to a position of presentment when the shoe is withdrawn from the tool 1 at the completion of the trimming op oration. This device comprises an arm 127 secured to the post 58 which is provided with a forked end 128 terminating. in a slot 129 in the crotch of the fork and a ,cylindri cal pin 130 carried by a slide 131. lhe

slide 131 reciprocates in ways in a bracket formed on the machine frame and is connected by a link 132 to an arm 133 project-l ing from a sleeve 134 on a rod .135 on the .machine frame. A second arm 136 on the sleeve 134 carries a roll 137 which is engaged by a groove formed in the face of the shoulder cam 82. When the slide is actuated to position the post 58, the advancing cylindrical pin strikes one of the arms of the fork 128, and rocks the post 58 to bring the slot 129 into position to receive the pin 130. The pin 130 is .timed to move into the fork 128 as the shoe is being withdrawn from the trimming tool 1, so that the jack is held in the position of presentment while a shoe is being removed and another one placed thereon. .The arm 127 and pin 130 also hold the jack rigid during the jacking operation.

n order that the cycle of operations may commence and stop with the cutter at the back of the heel, the machine of the drawings is provided with a clutch and brake mechanism which is manually controlled to start the machine and automatically controlled to stop the machine. A driving pulley 138, rotated from some suitable source of power, is loosely mounted 011 a shaft 139 journaled in bearings in the frame of the machine, This shaft carries a pinion .140 which drives agear 141 on the cam shaft 23. One face of the driving pulley .138 is provided with a clutch member 142 which is engaged, when it is desired to start the machine, a clutch member 143 carried by a.

sleeve 144 splined on the shaft 139. The

sleeve 144 is normally pressed toward the pulley 138 to clutch theshaft 139 and the pulley together by a spring 145 coiled around the shaft-139 and interposed between one of the bearings fortheshaft andthe sleeve 144. y i

In order to separate the clutch members 142 and 143 the sleeve 144 is provided with an annular groove 146 which embraces a roll 147 .mounted on an arm 148 pivoted on a bracket carried by the machine frame. The

abrake member 153 formed ona stationary part of the machine frame. In order to release the sleeve 144to the influence of the spring 145, thetrip 149 is rocked on the arm 148 to withdraw it from the incline 150. The trip is rocked to start the machine by connections from a foot treadle 1 54 mounted on a rock shaft155 at the front of the machine. The rock shaft 155 carries at one end an arm 156 which is pivoted to rod 157 pivoted in turn to, the vertical arm of n bell crank lever 158 carried by a bracket onthe machine frame. The horizontal arm of the bell crank lever is pivoted to. a rod 159 which is guided vertically by a lug 160 formed on the frame. The upper end of the rod 15 9 carries a cap 161 which rests upon the trip 149. "When the treadle is depressed the trip 149 is released from the incline and the machine is started. If the treadle 154 is released the trip will reengage the incline after onerevolution of the disk 151 and the machine will be automatically stopped, with the cutter at the back of the heel. i

l Vhen the machine is at rest the frame '7 is in a position of presentation at the front of themachine the hook 116 is holding the clamping foot retracted, the positioning pins 11 are projected above the pattern 9,

heel'seat. The lever 35 is then actuated to ice are

measure the thickness to be clamped and automatically adjust the connection between the cam 53 and the foot26 so that the final clamping pressure produced .by the can 53 maybe stiflicient to prevent the work from displacement on the plates. The heel Z is ftlien'locked on the plate l'and the frame 7 swungrearwardly to bring the work against the tool. In this movement the shoe contacts with-the guide 73 which automatically finds and engages in the rand crease.

As the cylindrical pin'180 is at this time withdrawnfrom the fork 128, the spring 68 cause's'th'e work support to swing about the axis of the post 58 until the pattern 9 engages the guide 88, the pins 11 having been clamp is then'unlocked and retracted to per mit the removal of the work. The machine then stops automatically with the parts in position to commence the described cycle of operation on another heel.

In the preferred embodiment of the invention the tipping to obtain the desired pitchat the back of the heel is accomplished "by changing the angular position of the work supportv relative to the tool. The invention, however, as defined in the claims is not limited to an angular movement of the work support but is of sufficient breadth to include a relative tipping of the Work support and tool. l

'While the present invention has been illustrated and described'as embodied in a heel trimming'machine of the rotary cutter type, it will be readily understood that a heel burnishing machine of'the rotary tool type could have been selected for the purpose ofillustration and description and that certain features of construction relating to the supporting and positioning devices for the heel are applicable to any and all machines for operating on or making shoes.

-What is claimed as new, is

1. A shoe machine, having, in combination, a tool, and means for constraining the work being operated upon to tip about an axis tangential to a point on the operative surface of the tooll 2. A heel trimming machine, having, in combination, a trimming tool, and means for constraining the heel being operated upon to tipabout an axis located between the 'upper and lower surfaces of the heel and 'on the peripheral surface formed by the :line of cut.'

3. A heel trimming machine, having, in combination, a trimming tool, a work support, means for relatively actuating the tool and the support to transfer the line of operation of the tool aroundthe heel, and means for tipping the heel about an axis intersecting the line of operation of the tool tangential to a point onits trimming surface,

LA heel trimming machine, having, in combination, a trimming tool, a shoe sup port, means for relatively actuating the tool and the support to transfer the line of operation of the tool around the heel of the supported shoe, and means controlled by the form of the heel crease and toplift for tipping the shoe about an axis intersecting the line of operation of the tool tangential to its trimming surface.

5. A machine for operating upon heels, having, in combination, a work support, means for determining the working position of the heel of a shoe upon the support, means for automatically clamping the positioned heel, and means for locking the clamping means in clamping position.

6. A machine for operating upon heels, having, in combination, a work support, means for determining the working position of the heel of a shoe upon the support, means for automatically clamping the positioned heel, means for locking the clamping means in clamping position, means for operating upon the clamped heel, and means for automatically unlocking the clamping means after the completion of the operation.

7. A machine for operating upon heels, having, in combination, a work support, and means for clamping the heel of a shoe upon the support including a device for preliminarily measuring the thickness to be clamped.

8. A machine for operating upon heels, having," in combination, a work support, a wedge for determining the amount of pressure required to clamp the heel of a shoe upon the support, and means for actuating the wedge to clamp the heel.

9. A machine for operating upon heels, having, in combination, a work support, a clamp for clamping the heel of a shoe upon the support, and means for actuating the clamp including an automatically adjustable connection for insuring the uniform clamping of heels of different sizes.

' 10. A shoe machine having, in combination, a shoe support, a crease guide normally held withdrawn from the support in a position to engage the shoe upper above its crease, and means to actuate the crease guide to move it along the upper and find the shoe crease.

11. A machine for operating upon heels,

having, in combination, an operating tool,

a crease guide, a shoe support, means for relatively actuating the .tool and the support to transfer the line of operation of the tool around the heel of the supported shoe, means for tipping the shoe about an axis intersecting the line of operation of the tool,

and means for maintaining the guide in the crease. 12. A, machine for operat ng upon heels,

nee-mom having, in combination, an operating tool, a crease guide, a shoe support, automatic means for rotating and tipping the shoe to transfer the line of operation of the tool around the heel 'of the supported shoe, and means for maintaining the guide in the crease as the shoe rotates and tips.

13. A machine for operating upon heels, having, in combination, a pattern plate, a positioning plate provided with a plurality of positioning pins adapted to surround the pattern, and means for relatively actuating the pattern and positioning pins to bring the pins into position to form a gage for positioning the heel of a shoe on the pattern plate.

14-. A shoe machine, having, in combination, an operating tool, a work support, antomatic means for rotating the shoe in contact with the tool to transfer the point of operation of the tool along curved portions of the shoe, and automatic means for sliding the shoe in contact with the tool to transfer the point of operation of the tool, along substantially straight portions of the shoe.

15. A heel trimming machine, having, in combination, a trimming tool, a guide arranged to engage the rand crease, a guide arranged to engage a toplift form, and means under the control of the machine for maintaining the guides pressed against the crease and form respectively.

16. A shoe machine, having, in combination, an operating tool, a work support, mounted to swing toward and from the tool out of and into a position of presenta tion and rock in contact with the tool, and means for locking the support against rocking movement during its swinging movement toward the tool.

17. A shoe machine, having, in combination, an operating tool, a work support mounted to rock about two axes located at right angles to each. other, and means for locking the shoe support against rocle ing movement about one axis as the shoe is presented to the tool.

18. A machine for operating upon heels, having, in combination, a work supporting plate provided with a pattern, a heel positioning plate provided with a plurality of positioning pins, and means for relatively actuating the pattern and positioning pins to cause the pins to inclose the pattern.

19. A machine for operating upon heels, having, in combination, an operating tool, a work supporting plate provided with a pattern, and means cooperating with said pattern to engage the edge of the top lift of the heel of a shoe when placed on the pattern and position the heel for the op reration of the tool. i

20. A machine for operatingiupon heels, having, in combination, on operating tool,

means for adjusting the crease guide for operating upon different heights of heels.

22. A machine for operating upon .shoes having, in combination, a shoe support,

means for clamping a shoe upon the support, a crease guide, means for normally holding the guide away from the support in a position beyond the crease of a supported shoe, means for normally extending the crease guide toward the clamping means, and means for actuating the guide tofind the crease of a supported shoe.

23. A machine for operating upon heels having, in cornbi ation, a tool, a work supporting plate provided with a pattern for guiding the operation of the tool, and means movable into and out of position to surround said pattern to lring the top lift of a h eel in pred ermined relation to said pat tern to determine the working position of the heel upon the support.

24;. heel trimming machine having, in combination, a rotary heel trimming tool, a work supporting plate provided with a pat tern for guiding the operation of said tool,

positioning means surrounding said. pattern tion, an oi ierating tooha rotatably mounted frame for supporting the work, means for holding said frame in a predetermined re lation to the tool-during the operation of the tool, and automatic means for locking said frame in a predetermined position at the completion of the tool operation and for releasing said frame for movement preparzu tory to the operation of the tool.

26. A shoe machine inning, in combination, machine frame, a support for the work having a swivel mounting in the frame, pattern on said support, a work guide independently mounted to move into and out of rigid engagement with the frame, a tool having a guiding surface for engaging the pattern, and means for rotating and oscilr &

lating said support to hold the work pressed against the work guide in rigid engagement with tlie frame and the pattern in engagement with the tool guide.

27'. In a heel trimming machine, the combination with a heel trimming cutter and a rand crease guide therefor, of a work support, mechanism for relatively moving said support and cutter to present the heel of a shoe mounted in said support to the action of said cutter to cause the heel to be trimmed, and mechanism arranged to operate in time relation to said relative movement of thesupport and the cutter for relatively moving said guide and shoe preparatory to the trimming operation to cause said guide to be positioned automatically in the rand crease of the shoe notwithstanding variations in the height of the heels of the shoes being trimmed; I

28. In a heel trimming machine, the combination with a heel trimming cutter and a rand crease guide therefor, of a 'work support, mechanism for relatively moving said support and cutter to present the heel of a shoe mounted in said support to the action of said cutter to cause the heel to be trimmed, and mechanism arranged for operation during said relative movement of the support and the cutter for relatively moving saidguide and shoe in a direction approximately parallel to the axis of said cutter to cause said guide to be positioned in the rand crease of the shoe preparatory to the trimming operation.

29. In a heel trimming machine, the combination with a heel trimming cutter and a rand crease guide therefor, of a work support, mechanism for relatively moving said support and cutter to cause the cutter to trim the heel of a shoe mounted in said support, and mechanism under the control of the machine for moving said guide relatively to the shoe to cause it to be positioned in the rand crease of the shoe preparatory to the trimming operation. 1

30. Ina heel trimming machine, the combination with a rotary cutter, a shaft supporting said cutter, and stationary hearings for said shaft, of a shoe clamping mechanism, a jack supporting saidme'chanism, means operating automatically for moving said jack to present the shoe held by said clamping mechanism to said cutter and to move the shoe past the cutter to cause the cutter to trim the sides of the shoe heel, and mechanism acting through said clamping mechanism to turn the shoe to cause the cutter to trim around the end of the heel.

31. In a heel trimming machine, the combination with a rotary cutter, a shaft supporting said cutter, and stationary bearings for said shaft, of guiding devices mounted adjacent to said cutter, a shoe support, means acting on said support to move the heel held thereby relative to the cutter to cause the heel to be trimmed, means acting through said support to hold the heel yieldingly in contact with said cutter and guiding devices during the trimming operation, and means for overcoming the action of said yielding means to move the heel away from the cutter.

32. In a heel trimming machine, the combination with a rotary cutter, a shaft supporting said cutter, and stationary bearings for said shaft, of a shoe support, means acting through said support to move the heel of the shoe mounted therein bodily past the cutter and to turn the shoe to cause said cutter to trim the entire heel edge, means acting yieldingly through said support to hold the heel in contact with said cutter, and means acting automatically to overcome the action of said yielding means to move the heel away from the cutter after the trimming operation hasbecn completed.

33. In a heel trimming machine, the combination with a heel trimming cutter and a rand crease guide, of a work support movable to carry a shoe into position to cause the heel of the shoe to be trinnnod by said cutter, and means arranged to be operated in time relation to said movement of the support for relatively moving the guide and the shoe to cause the guide to enter the rand crease of the shoe.

3%. In a heel trimming machine, the combination with a heel trimming cutter and a rand crease guide, of a work support movable to carry a shoe into position to cause the heel of the shoe to be trimmed by said cutter, means for positioning the rand crease guide when idle at a distance from the end of the cutter, and means for moving said guide toward the cutter as the shoe is brought into position to be trimmed.

35. A shoe machine, having, in combination, a tool, a work support, and means for relatively tipping the work support and tool about an axis tangential to a point on the operative surface of the tool.

36. A machine for operating on the pcripheral surface of a heel, having, in combination, a tool, a work support, and means for relatively tipping the tool and work support about an axis located between the heel seat and tread face of the heel on the surface of the heel engaged by the tool.

37 A heel trimming machine, having. in combination, a trimming tool, a. work support, means for relatively actuating the tool and work support to transfer the line of operation of the tool around the heel, and means for relatively tipping the tool and work support about an axis intersecting the line of operation of the tool tangential to a point on its trimming surface.

88, A heel trimming machine, having, in combination, a trimming tool, a Work support, automatic means for rotating the heel in contact with the tool to transfer the point of operation of the tool around the back of the heel, and automatic means for relatively sliding the tool and Work support in a right line to transfer the point of operation of the tool along the sides of the heel.

39. A heel trimming machine, having, in combination, a trimming tool, a Work support, and automatic means for imparting relative rotary and rectilinear traversing movements to the tool and work support to produce a curved back and substantially straight sides on the heel.

ERASTUS E. WINKLEY.

l/Vitnesses:

WARREN G. OGDEN, GEORGE E. STEBBINs.

Monies of this patent may he obtained for five cents each, by addressing the Commissioner ofPatentn, Washington, D. C. 

